Review of the Leitz 85mm Summarex whets the appetite for fast vintage glass - Macfilos
Leica Society International - The 85mm f/1.5 Leitz Summarex was created by Max Berek in 1936 and was the world's first super-speed medium telephoto based on a Gaussian optical formula. This 7-element,
About Photography: Leica Summarex 8.5cm f/1.5 - an old dog with new tricks
Leica Summarex 85 mm f/1,5 - la documentation de summilux.net